MASCHINE 2 Error Message: "Missing Plug-ins. The following Plug-ins could not be loaded"

Symptom

When loading a project in MASCHINE 2, you receive the following error message mentioning a particular Native Instruments product:

Missing Plug-ins: The following Plug-ins could not be loaded:

Cause

This error message indicates that the project is unable to locate the plug-in in its original installation path. The plug-in has either been moved or deleted from that location.

Solution

Mac

1. Open Native Access.
2. Go to the Installed products tab and scroll down to the NI product mentioned in the error message. Hover your mouse over FULL VERSION until you see a REINSTALL button. Press it to launch the reinstallation process.
   

You can now close Native Access and restart MASCHINE. The project should now load as expected.

Windows

1. Open Native Access.
2. Under Installed products, scroll down to the product mentioned in the error message.
3. Important: If you notice there is a yellow REPAIR button, repair the installation as explained in this article or this video. If you see no REPAIR button, proceed with the instructions below.
   
4. Click on the product's name to show the information window.
5. Write down the installation path of the VST files.
   
6. Close Native Access.
7. Open the MASCHINE standalone application.
8. Open the Preferences and go to Plug-ins > Locations.
9. Check if the path you noted in Native Access is listed here. If it is, click Rescan. If it is not, click the Add button, navigate to the path listed in Native Access as VST location and select it. Once it is listed in the Plug-ins Locations Preferences, click Rescan. 
   

The project should now load as expected.